19858150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 40247424

約数和(自身を除く): 20389274

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 137, 223, 274, 325, 446, 650, 685, 1115, 1370, 1781, 2230, 2899, 3425, 3562, 5575, 5798, 6850, 8905, 11150, 14495, 17810, 28990, 30551, 44525, 61102, 72475, 89050, 144950, 152755, 305510, 397163, 763775, 794326, 1527550, 1985815, 3971630, 9929075, 19858150]

約数ペア:

[(1, 19858150), (2, 9929075), (5, 3971630), (10, 1985815), (13, 1527550), (25, 794326), (26, 763775), (50, 397163), (65, 305510), (130, 152755), (137, 144950), (223, 89050), (274, 72475), (325, 61102), (446, 44525), (650, 30551), (685, 28990), (1115, 17810), (1370, 14495), (1781, 11150), (2230, 8905), (2899, 6850), (3425, 5798), (3562, 5575)]